Ayuda Si al aplicar a un muelle una fuerza de 30 N provocamos que se alargue 20 cm, calcular: La fuerza habrá que aplicarle para que se alargue 45 cm. *
67.5 N
150 N
30 N
50 N

Which levels of government establish and implement educational requirements for minors

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.